Rock Springs Capital Management LP Q4 2018 Filing

Filed February 14, 2019

Portfolio Value

$2.1B

Holdings

133

Report Date

Q4 2018

Filing Type

13F-HR

All Holdings (133 positions)

StockValue
UNHUNITEDHEALTH GROUP INC
$150.2M
WCGEURWELLCARE HEALTH PLANS INC
$92.0M
ISRGINTUITIVE SURGICAL INC
$72.8M
AMRNAMARIN CORP PLC
$60.9M
GW PHARMACEUTICALS PLC
$58.4M
HCAHCA HEALTHCARE INC
$56.6M
NBIXNEUROCRINE BIOSCIENCES INC
$56.3M
PCRXPACIRA PHARMACEUTICALS INC
$53.8M
EHCENCOMPASS HEALTH CORP
$44.7M
TESARO INC
$44.7M
MOHMOLINA HEALTHCARE INC
$39.7M
SRPTSAREPTA THERAPEUTICS INC
$35.7M
LOXO ONCOLOGY INC
$33.8M
VRTXVERTEX PHARMACEUTICALS INC
$33.6M
TFXTELEFLEX INC
$33.6M
IRTCIRHYTHM TECHNOLOGIES INC
$33.5M
BSXBOSTON SCIENTIFIC CORP
$32.3M
ONCBEIGENE LTD
$30.1M
EWEDWARDS LIFESCIENCES CORP
$28.1M
SYKSTRYKER CORP
$28.1M
COLLCOLLEGIUM PHARMACEUTICAL INC
$27.6M
PENPENUMBRA INC
$27.5M
WRIGHT MED GROUP N V
$27.2M
MDGLMADRIGAL PHARMACEUTICALS INC
$27.2M
EXASEXACT SCIENCES CORP
$24.3M
ALXNALEXION PHARMACEUTICALS INC
$23.6M
ACHCACADIA HEALTHCARE COMPANY IN
$23.2M
AFWALIGN TECHNOLOGY INC
$22.0M
TMOTHERMO FISHER SCIENTIFIC INC
$21.5M
ALLKGUSDALLAKOS INC
$21.1M
SPARK THERAPEUTICS INC
$21.0M
IDXXIDEXX LABS INC
$20.6M
BAXBAXTER INTL INC
$19.8M
INCYINCYTE CORP
$19.7M
RAREULTRAGENYX PHARMACEUTICAL IN
$18.5M
PRAHPRA HEALTH SCIENCES INC
$18.4M
RADIUS HEALTH INC
$18.1M
ARGXARGENX SE
$17.1M
GLPGGALAPAGOS NV
$16.3M
WSTWEST PHARMACEUTICAL SVSC INC
$15.7M
NVTA1EURINVITAE CORP
$15.5M
ASNDASCENDIS PHARMA A S
$15.3M
ALDER BIOPHARMACEUTICALS INC
$15.1M
BIIBBIOGEN INC
$15.0M
INGNINOGEN INC
$14.5M
OBSEVA SA
$14.2M
FGENEURFIBROGEN INC
$14.2M
ALNYALNYLAM PHARMACEUTICALS INC
$14.1M
TBPHTHERAVANCE BIOPHARMA INC
$14.1M
MEDICINES CO
$13.9M
RA PHARMACEUTICALS INC
$13.7M
HRTXHERON THERAPEUTICS INC
$13.6M
INTERSECT ENT INC
$13.1M
AXGNAXOGEN INC
$12.3M
AG8AGILENT TECHNOLOGIES INC
$12.3M
EX9EXELIXIS INC
$12.2M
ZBHZIMMER BIOMET HLDGS INC
$12.2M
CELGCELGENE CORP
$11.9M
2L9BLUEPRINT MEDICINES CORP
$11.5M
SGENEURSEATTLE GENETICS INC
$11.5M
IM8NINSMED INC
$11.2M
IMMUNOMEDICS INC
$11.1M
DVADAVITA INC
$11.1M
BMRNBIOMARIN PHARMACEUTICAL INC
$11.0M
AUDENTES THERAPEUTICS INC
$10.7M
ASMBASSEMBLY BIOSCIENCES INC
$10.2M
FIXXEURHOMOLOGY MEDICINES INC
$10.1M
GBTUSDGLOBAL BLOOD THERAPEUTICS IN
$10.1M
EPIZYME INC
$9.9M
ACRSACLARIS THERAPEUTICS INC
$9.8M
RIGLUSDRIGEL PHARMACEUTICALS INC
$9.7M
BIOHAVEN PHARMACTL HLDG CO L
$9.6M
AM6AMICUS THERAPEUTICS INC
$9.6M
PBYIPUMA BIOTECHNOLOGY INC
$9.3M
RETROPHIN INC
$9.1M
ANABANAPTYSBIO INC
$8.7M
ZOGENIX INC
$8.6M
ZLABZAI LAB LTD
$8.1M
GHGUARDANT HEALTH INC
$8.1M
IFRXINFLARX NV
$7.9M
TRANSLATE BIO INC
$7.6M
FRPTFRESHPET INC
$7.6M
RTI SURGICAL INC
$7.2M
NVCRNOVOCURE LTD
$6.5M
MRTXEURMIRATI THERAPEUTICS INC
$6.4M
ODONATE THERAPEUTICS INC
$6.3M
CHRSCOHERUS BIOSCIENCES INC
$6.1M
AXNX*AXONICS MODULATION TECH INC
$6.0M
NVAXNOVAVAX INC
$6.0M
GLOBAL CORD BLOOD CORPORATIO
$6.0M
PORTOLA PHARMACEUTICALS INC
$5.9M
RYTMRHYTHM PHARMACEUTICALS INC
$5.8M
MYOVANT SCIENCES LTD
$5.7M
BCRXBIOCRYST PHARMACEUTICALS
$5.6M
APTINYX INC
$5.0M
AGLEUSDAEGLEA BIOTHERAPEUTICS INC
$4.9M
CBAYUSDCYMABAY THERAPEUTICS INC
$4.8M
FIVE PRIME THERAPEUTICS INC
$4.7M
SG7SAGE THERAPEUTICS INC
$4.7M
CLVSEURCLOVIS ONCOLOGY INC
$4.6M
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